Alcatel Lucent

Nokia Solutions and Networks Oy

Travis S Lentz

Duane Richard Remein

James J Stiscia

David Eckard

Hal A Thorne

Jonathan Stuart Huffman

Ray Tyrrell

Dirk Corsus

An apparatus and method for mitigating wavelength drift in an optical communication network. A network node such as an OLT in a PON receives a transmission on a certain optical channel. The received signal is of course sent to a receive module for processing the data contained therein, and may be sent to an RSSI module for signal strength analysis. A portion of the received transmission, however, is directed to a wavelength control section where it is divided into at least a first path and a second path, the second path having a wavelength discriminator filter. The light propagating along each path is converted to an electrical signal and digitized for comparison by a microcontroller. The microcontroller calculates one or more power ratios and from this determines the receive signal wavelength. This wavelength is compared to the wavelength of a selected channel to determine what if any adjustments should be made.

Apparatus and methods for mitigating wavelength drift in an optical communication network

A transmission system for a passive optical network comprises a shared optical transmission apparatus, a shared electrical interface apparatus and a plurality of transmission convergence termination units. The shared optical transmission apparatus is configured for being coupled to an optical line termination unit via an optical fiber. The shared electrical interface apparatus is coupled to the shared optical transmission apparatus. The plurality of transmission convergence termination units is coupled to the shared electrical interface apparatus. Each one of the transmission convergence termination units is configured for selectively controlling the shared electrical interface apparatus.

Optical network termination apparatus with shared components and passive optical network system comprising same

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Raleigh, NC, United States of America

Travis S Lentz